How Strong Are B+ Mushrooms — and Why Are They So Popular?

B+ mushrooms are one of the most popular strains of Psilocybe cubensis — known for their potency, visual effects, and easy cultivation.

First developed by a grower known as Mr. G, B+ mushrooms gained a reputation for producing large flushes and thriving in a variety of conditions — making them a favorite among beginner cultivators.

While some claim B+ mushrooms offer a uniquely warm, euphoric trip, others argue they are simply an average cubensis strain with clever marketing.

In this guide, we’ll explore how strong B+ mushrooms really are, what a B+ mushroom trip feels like, and whether they deserve the hype — or if you should consider stronger strains like Penis Envy or Golden Teacher mushrooms instead.

Why Are B+ Mushrooms So Popular Among Growers and Users?

B+ mushrooms earned their reputation because they are easy to grow, beginner-friendly, and known for producing large, visually impressive flushes.

Unlike some strains that require careful growing conditions, B+ mushrooms are more resistant to contamination, colonize quickly, and thrive across a wide range of substrates and environments.

For this reason, they remain a top choice for first-time cultivators learning how to grow magic mushrooms.

Beyond cultivation, many users report that the B+ mushroom experience feels warm, visual, and uplifting.

Some people argue that these effects are typical of most Psilocybe cubensis strains and influenced more by dosage and set and setting than genetics alone.

Its friendly name: “B+” or “B-positive”, adds to the appeal, making it sound more approachable compared to mushroom strains with names like Penis Envy or Trinity Mushroom.

Do B+ Mushrooms Feel Different Compared to Other Psilocybe Cubensis Strains?

No — B+ mushrooms produce effects similar to other Psilocybe cubensis strains.

Some users report slightly more visuals or a “warmer” trip, but the difference is minor and highly subjective.

The psychedelic effects of any mushroom strain — including B+ — depend far more on dosage (see magic mushroom dosage guide), set and setting, and individual sensitivity than on the strain itself.

Psilocybin content can vary batch to batch, making strain comparisons unreliable unless verified by lab testing.

In general, B+ mushrooms provide a typical Psilocybe cubensis trip — visual, introspective, and mood-enhancing.

Is B+ Mushroom Popularity Just Marketing?

No, B+ mushrooms became popular because they are easy to grow, resilient, and ideal for beginners.

The friendly name (“B-positive”) may have helped, but the strain’s reputation comes from potency, not hype alone.

B+ spores colonize quickly, tolerate a wide range of conditions, and resist contamination — making them a go-to choice for first-time cultivators

While not the strongest mushroom strain, B+ delivers consistent flushes and a balanced trip, qualities that matter more than branding

What Do B+ Mushrooms Look Like?

B+ mushrooms are large psilocybin mushrooms with thick white stems and caramel to golden-brown caps. Mature mushrooms can grow up to 28 cm tall (11 inches),larger than most Psilocybe cubensis strains.

Even the average ones are larger than most Psilocybe cubensis strains, which is part of why so many beginners like growing them. They just look impressive.

Key Features of B+ Mushrooms:

• Cap size: 5–8 cm (2–3 inches) wide. Caps appear light to dark brown—often golden-brown in warm environments, or darker caramel in cooler temperatures. A distinct pointed “nipple” is common at the center.
• Stem length: 10–28 cm (4–11 inches), thick and sturdy. Color ranges from white to pale tan, with a fibrous texture. The stems are strong enough to support large caps without collapsing.
• Bruising: Blue bruising typically develops on stems and cap edges after handling—an indicator of psilocybin presence. For more details, see: Dried vs. Fresh Magic Mushrooms.

How Strong Are B+ Mushrooms?

B+ mushrooms are a medium-strength strain of Psilocybe cubensis. They’re not the most potent, but they offer a reliable and well-balanced psychedelic experience.

If you’re used to Golden Teachers, B+ will feel pretty similar—maybe just a little stronger, depending on the batch.

What’s their potency level?

B+ mushrooms contain around 7.9 mg of psilocybin per gram of dried mushrooms.

That puts them slightly above average for most cubensis strains, which usually fall between 5 to 8 mg per gram. Still, like any mushroom, the strength can change based on how it was grown.

How much B+ you should take?

The right dose depends on your experience, body weight, and setting. Always start low if unsure.

Recommended dosages (dried B+ mushrooms):

Dose type	Grams (g)	Milligrams (mg)
Microdose	0.1g – 0.3g	100mg – 300mg
Light trip	0.5g – 1.0g	500mg – 1,000mg
Moderate trip	1.5g – 2.5g	1,500mg – 2,500mg
Strong trip	3g – 3.5g	3,000mg – 3,500mg
Heavy trip (advanced)	4g+	4,000mg+

If you’re new to B+ mushrooms or psychedelics, start with 1.5g – 2g (moderate). This gives a strong experience without overwhelming effects.

How Does B+ Compare to Golden Teacher and Penis Envy?

B+ mushrooms are a medium-strength strain of Psilocybe cubensis, stronger than Golden Teacher but much milder than Penis Envy.

If you’re deciding between these popular strains, here’s how they compare in terms of potency, trip effects, and who they are best suited for:

B+ vs Golden Teacher

B+ mushrooms are slightly stronger and more visual than Golden Teacher.

Both strains are beginner-friendly and deliver a balanced trip. However, many users report B+ produces richer visuals and a deeper “headspace” — while Golden Teacher is smoother and more introspective.

• B+ mushrooms: ~7.9 mg psilocybin per gram — more visual, immersive
• Golden Teacher: ~6.5–7 mg psilocybin per gram — lighter, gentler experience

If you’re new to macrodosing, both are great options — though Golden Teacher is a bit more forgiving for first-timers.

B+ vs Penis Envy

Penis Envy mushrooms are much stronger than B+ and not recommended for beginners.

Penis Envy often delivers 2–3x the potency of typical cubensis strains, resulting in a much more intense and long-lasting psychedelic trip.

• B+ mushrooms: Medium-strength, beginner-friendly, balanced visuals
• Penis Envy: High potency, heavy visuals, strong ego dissolution — best for experienced users

If you want an accessible, versatile strain, stick with B+ or Golden Teacher. If you’re seeking a powerful, mind-expanding experience and already have experience with psychedelics, Penis Envy is an option — but requires much more caution.

How Strong Are B+ Mushrooms Compared to Other Strains?

B+ mushrooms are considered a medium-strength Psilocybe cubensis strain — stronger than some (Golden Teacher, Hillbilly), but milder than ultra-potent strains like Penis Envy or Tidal Wave.

Here’s a quick comparison of B+ potency vs other common strains:

Strain	Approximate psilocybin (mg per gram dried)	Potency level
Golden Teacher	~6.5–7 mg	Mild–Moderate
B+ Mushrooms	~7.9 mg	Moderate
Hillbilly Mushrooms	~6–7 mg	Mild–Moderate
Trinity Mushrooms	~8–9 mg	Moderate–Strong
Tidal Wave	~10–12 mg	Strong
Penis Envy	~15–20 mg	Very Strong

B+ mushrooms sit comfortably in the middle: stronger than many beginner strains but without the overpowering intensity of advanced strains like Penis Envy.

If you’re starting with moderate doses (1.5g–2.5g dried), B+ offers a reliable and balanced trip — suitable for newer and experienced users alike.

What Does a B+ Mushroom Trip Feel Like?

A B+ mushroom trip typically produces visual effects, enhanced colors, pattern recognition, and a relaxed body sensation. The experience is often described as “warm” and uplifting, with a calm onset and manageable peak.

Higher doses (3–4 g dried) may lead to deeper introspective states, open-eye visuals, and altered perception of time.

Lower doses (1.5–2.5 g dried) generally result in mild euphoria, mood elevation, and enhanced sensory awareness. Set and setting significantly influence the nature of the experience (see Magic Mushroom Dosage 101).

How long does it last?

A B+ trip usually lasts around 4 to 6 hours, with the peak happening about 90 minutes to 2 hours in. After the peak, things taper off slowly.

You’ll feel mostly back to baseline by hour six, maybe a little dreamy or tired, depending on how the trip went.

What Are the Side Effects of B+ Mushrooms?

B+ mushrooms produce the same side effects as other strains of Psilocybe cubensis — since they all contain psilocybin as the primary active compound.

Common side effects of B+ mushrooms include:

• Nausea or upset stomach (especially during onset)
• Dilated pupils
• Increased heart rate
• Changes in blood pressure
• Visual distortions (color shifts, patterning)
• Altered perception of time
• Emotional shifts (both positive and challenging)
• Body temperature changes (sweating, chills)

Less common side effects:

• Temporary anxiety
• Confusion or disorientation
• Dizziness
• Difficulty focusing or communicating

Set and setting greatly influence whether a trip is enjoyable or uncomfortable. If you’re new to psilocybin, read this guide: What is a Bad Trip?

B+ mushrooms are generally considered beginner-friendly, but dosage matters. Taking too much or using mushrooms in a poor setting can increase the risk of side effects.

Is B+ a Good Mushroom for Beginners?

Yes, B+ is one of the most recommended strains for beginners, and for good reason. It’s easy to grow, easy to find, and most people say the trip is manageable, even at moderate doses.

Since B+ falls in the middle range for potency, it’s not one of those strains where a small mistake sends you into deep space.

You still need to weigh your dose, of course—but the margin for error is a little more forgiving than with something like Penis Envy.

Can You Find B+ Mushrooms in the Wild?

Not really. B+ mushrooms don’t grow naturally in the wild—not like some of the other psilocybin species you can find in forests or woodchip beds. B+ is a lab-created strain, and it’s mostly found indoors, not out in nature.

Do they grow naturally?

No. B+ doesn’t pop up on its own in the wild.

It was likely developed by a cultivator (most say Mr. G), and it needs the right conditions and substrate to grow—stuff like brown rice flour, coco coir, or manure, none of which you’d randomly find in a forest.

If you do find them outside, it’s probably because someone was growing them nearby or they escaped from an outdoor grow. But even then, it’s rare.

You won’t find B+ growing in parks, mulch beds, or grassy fields like some wild species (P. cyanescens, for example).

How to Grow B+ Mushrooms?

B+ mushrooms are one of the easiest magic mushroom strains to grow. They colonize quickly, and don’t need anything fancy to thrive. If you’re just getting started, this is a great one to learn with.

Here’s how to do it step by step:

1. Pick your grow method.
   
   • If you’re new, go with PF Tek using brown rice flour and vermiculite.
     
   • If you want bigger yields, try a monotub with coco coir or manure-based substrate.
     
2. Get your supplies.
   
   • B+ spores (usually in a syringe)
     
   • Substrate materials (brown rice flour for PF Tek, or coco coir/manure for bulk grows)
     
   • Glass jars or plastic tubs
     
   • Spray bottle for misting
     
   • Micropore tape or filters for airflow
     
3. Inoculate the substrate.
   
   • Sterilize your jars or bags.
     
   • Inject spores into the substrate.
     
   • Keep everything clean to avoid contamination.
     
4. Wait for colonization.
   
   • Keep jars or tubs at around 75–81°F (24–27°C).
     
   • In 2 to 3 weeks, the white mycelium should fully take over.
     
5. Move to fruiting.
   
   • Once colonized, move to a fruiting setup like a monotub or shotgun fruiting chamber.
     
   • Drop temps to 70–75°F (21–24°C) and boost humidity to 90–95%.
     
   • Give them 12 hours of light per day.
     
6. Wait for pins, then harvest.
   
   • Tiny mushrooms (pins) will appear in about a week.
     
   • Harvest when the caps are fully open but before they flatten out.
     
7. Get ready for more.
   
   • Mist lightly and maintain humidity.
     
   • B+ often gives multiple flushes, and the second and third ones are usually even bigger.
     

It’s a low-stress grow if you keep things clean and don’t rush it. B+ gives solid results, even if it’s your first time.

How Long Do B+ Spores Take to Grow?

B+ spores typically take 2 to 3 weeks to colonize the substrate after inoculation. Under ideal conditions (75–81°F / 24–27°C), white mycelium fully spreads through the substrate during this stage.

Once colonized, fruiting bodies (pins) usually appear within 7 to 10 days after moving to a fruiting chamber.

Typical B+ mushroom grow timeline:

• Inoculation to full colonization: ~2 to 3 weeks
• Fruiting stage (pins to harvest): ~1 to 2 weeks
• Total time: ~4 to 5 weeks from spore to harvest

Compared to slower strains like Penis Envy Mushrooms, B+ mushrooms grow faster and are easier for first-time growers.

What Should You Know About B+ Spores?

B+ spores are super popular, which makes them easy to find and easy to work with—perfect for beginners.

1. Are they easy to find online?
   Yes. B+ spores are sold by almost every spore vendor out there. You can buy them in syringes, prints, or pre-loaded kits, depending on what setup you’re going for. Just make sure you’re buying from a reputable seller with good reviews. And check your local laws—spores are legal to buy in most U.S. states for microscopy use, but banned in a few like California, Idaho, and Georgia.
   
2. Do they colonize quickly?
   Compared to other strains, yes. B+ spores are known to colonize fast and handle contamination well, which is a big reason why people recommend them for first-time growers. Under the right conditions, you’ll see solid growth within a few days, and full colonization in about 2 to 3 weeks.
   
3. Can you use them in any setup?
   Pretty much. B+ spores work with PF Tek, monotubs, grow bags, and other common setups. They’re not picky about substrate, and they adapt well to different environments. Whether you’re doing a small jar, grow or a full tub, B+ spores can handle it.

Bottom line—B+ spores are easy to find, easy to use, and tough enough to give you a good shot at successful growth, even if it’s your first time.

Should You Try B+ or Pick Another Strain?

B+ is perfect for beginners. It’s easy to grow, handles contamination well, and doesn’t need much to thrive.

If you’re growing mushrooms for the first time and want something that gives a solid trip without being overwhelming, B+ is a great pick. It also grows big, flushes well, and works with pretty much any setup.

When is it not the right choice?

If you’re after a really strong, mind-bending experience, B+ might feel a little mild. It’s not weak, but it doesn’t hit like strains such as Penis Envy or Tidal Wave. If you’ve already tried a few strains and want something more intense, you might want to level up.

What are some better options if not B+?

If B+ feels too soft or you want a different kind of experience, here are a few other strains worth checking out:

• Penis Envy – Super potent and not recommended for beginners
  
• Tidal Wave – Hits harder, often with strong visuals
  
• Trinity Mushroom – A balanced but more intense trip
  
• Golden Teacher – Another beginner-friendly option, more mellow than B+
  

Is B+ Mushroom Strain Worth Trying?

It might not be the most powerful strain out there, but it gives a good trip, especially for first-timers. It’s easy to grow, produces big fruits, and doesn’t require a lab setup to get it right.

It may not be the flashiest or strongest, but there’s a reason B+ is still one of the most talked-about strains today. It works, it’s simple, and for a lot of people, that’s more than enough.

FAQ

Are B+ mushrooms strong?

Yes — B+ mushrooms are a medium-strong strain of Psilocybe cubensis. They offer a well-balanced psychedelic experience, stronger than beginner strains like Golden Teacher, but milder than high-potency strains like Penis Envy or Tidal Wave.

How long do B+ mushrooms take to grow?

B+ mushrooms typically take 2 to 3 weeks to fully colonize and another 1 to 2 weeks to fruit, depending on your setup and conditions. Many growers report first harvests within 4 to 5 weeks after inoculation.

How strong are B+ mushrooms compared to other strains?

B+ mushrooms are slightly stronger than strains like Golden Teacher, with richer visuals and a deeper cognitive effect — but less intense than potent strains such as Penis Envy. Full comparison: see Golden Teacher Mushrooms Guide and What’s the Strongest Magic Mushroom?.

What are the side effects of B+ mushrooms?

Side effects can include nausea, anxiety, dizziness, confusion, and — at higher doses — temporary paranoia or emotional intensity. These effects depend on dosage, individual sensitivity, and set and setting. For more, read Side Effects of Psilocybe Cubensis.

Are B+ mushrooms good for beginners?

Yes, B+ mushrooms are one of the best beginner strains because they are easy to grow, resistant to contamination, and offer a manageable, balanced psychedelic trip.

Can you find B+ mushrooms in the wild?

No, B+ is a cultivated strain and does not grow naturally in the wild. It was developed for indoor cultivation and is typically grown on substrates like brown rice flour, coco coir, or manure.